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Can table columns with a Foreign Key be NULL?
I have a table which has several ID columns to other tables.
7 Answers
7
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Whitespace Matching Regex - Java
The Java API for regular expressions states that \s will match whitespace. So the regex \\s\\s should match two spaces.
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What are the rules about using an underscore in a C++ identifier?
It's common in C++ to name member variables with some kind of prefix to denote the fact that they're member variables, rather than local variables or parameters. If you've come from an MFC background, you'll probably use m_foo . I've also seen myFoo occasionally.
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Case-Insensitive List Search
I have a list testList that contains a bunch of strings. I would like to add a new string into the testList only if it doesn't already exist in the list. Therefore, I need to do a case-insensitive search of the list and make it efficient. I can't use Contains because that doesn't take into acc...
What are the mechanics of short string optimization in libc++?
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Passing additional variables from command line to make
...d here which is included in the GNU Make book by Stallman and McGrath (see http://www.chemie.fu-berlin.de/chemnet/use/info/make/make_7.html). It provides the example:
archive.a: ...
ifneq (,$(findstring t,$(MAKEFLAGS)))
+touch archive.a
+ranlib -t archive.a
else
ranlib archi...
How can I cast int to enum?
How can an int be cast to an enum in C#?
31 Answers
31
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Setting environment variables on OS X
...s!
# grep -E "^setenv" /etc/launchd.conf | xargs -t -L 1 launchctl
#
# See http://www.digitaledgesw.com/node/31
# and http://stackoverflow.com/questions/135688/setting-environment-variables-in-os-x/
#
# Note that you must hardcode the paths below, don't use environment variables.
# You also need to ...
Eclipse: quick search on filename
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Difference between String replace() and replaceAll()
...that the later uses regex.
A: Just the regex. They both replace all :)
http://docs.oracle.com/javase/6/docs/api/java/lang/String.html
PS:
There's also a replaceFirst() (which takes a regex)
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